Machine



LMQSGS Jan. 2, -1 923.

l F. DIEHLA ELECTRICALLY LIGHTED SEWING MACHINE.

2 SHEETS-SHEET 1 FlLaD MAR.

l, 'rif INVENTOR WITNESSES: am QJ/M- 7?@ ATTORNEY Jan. 2, 1923. 1,440,863

F. DIEHL. ELEcTR|cALLv- LIGHTED SEWING MACHINE.

FILED MAR. 19 19,21. 2 SHEETS-SHEET 2 WITNESSES: INVENTOR ATTORNEY devicedisclosed in my. copending applica-` Patented Jan. y.2, 1923.

ulaiTiazD STATES PATENT OFFICE.

FREDERICK DIEHL, 0F ELIZABETH, NEVI JERSEY, ASSG-NOR TO. DIEHL `IVIANIITFAC- 'DURING- COMPANY, OF ELIZABETH, NEiT JERSEY, A CGRPGRATIGN `Oli' NEW JERSEY. l

ELECTRICALLY-LIG-HTED SEWING MACHINE.

y Application filed March 19, 1921. Serial No.' 453,786.

To @ZZ whom t may concern.'

lle it known that Fnnnmncn Dient, a citizen o'l" the United States, yresidingjry at `Elizabeth, in the county of Union. and State oliNcw Jersey,.have invented certain new and useful lmproven'ients in Electrically- Lighted'Sewing Machines, ot which vthe ollowing is a specification, reference being had therein to the accompanying drawings.

This invention relates to sewing machines, more particularly of the electrically driven type, and has for an object to provide a sewing machine with a built-in work-illuminat` ing device, as distinguished from a lighting attachment, which built-in ldevice will retain the advantages inherent in the lighting tion `SerialNo. 449,968,liled March 5, 1921, and will possess additional advantages chief among which are r(1) `the provision of a single supply circuit rleading from the sewingmachine out'iit through which current is supplied to both the light and the motor; `(2) the concealment and protection ot the wiring within the hollow sewing machine frame and the cabinet and (3) the peculiar simplicity, rigidity, and eiliciency of the construction and-its freedom from objectionable vibration. f

According to the present improvement,

in its preferred embodiment, the hollow bracket-arm'of the 'sewing machine is 'formed in its rear side, adjacent its bend, with spaced apertures in the smaller ot" which is secured one end oi an elbow, the outer end oit which is directed forwardly in substantially parallel relation with the bracket-arm and'rsupports an electric lamp socket, lampbulh and reiiector.` The wiring entends from the socket through the elbowr and rinto a conduit leading downwardly through the bracket-arm standard to a point below the sewing machine bed or cloth-plate- `The larger of the two apertures inA rear of the sewing machine bracket-arm is preferably fitted with ,abuilt-in motor unit, the lead wires for which alsorun downwardly within the bracket armf Then the sewing head is installed in the usual drop-head cabinet, the lighting wires ablepattachment plug. ln case the `machine is driven by means oi an electric motor, the motor control circuit is also led into the cavity oit the cabinet and is connected there-V y within to the supply cord, wherebyA the` one supply cord sulhces to operate both the lighting device and the sewing motor. The connections are so made that the motor can be started and stopped and its speedcontrolled thumb-screws, additional supply cords, etc.,

common. to the prior art.

ln the accompanying drawings, Fig. 1 is a transverse vertical sectional view through a sen/'ing machine cabinet outlit embodying the invention. Fig. 2 is a rear side elevation of the sewing head indicated in dotted n Fig. 3. is va top plan view` 'oi' the sewing head.

lines inFig.v 1.

Fig. l is a rear end view ot the 'sewing head, partly in section. Fig. .5 is a `fragmentary horizontal. section on the line 5-5 of Fig. 4l. Fig. 6 is an enlarged fragmentary vertical .section ol a portion oft Fig. d, and Fig. 7 is a sectional view oi? the bushing shown in Fig. G.

ln the particular embodiment or the invention chosen Yfor the purposes of the present disclosure, the sewing machine out- .it comprises a completeunitary electrically driven and lighted sewing head 1 mounted on a drop-head cabinet 2 and supplied .with electrical energy through a single supply circuit 3 adapted Afor attachment to the usual household lighting iixture or wall receptacle,

the light and motor circuits and connections" being concealed within the sewing machine frame and the cavity of the drop-head cabinet 2.

The sewing head is preferably.constructed substantially in accordance with the disclosure oit the Dosch et al. Patent No. lOehO, oi? May 2T, 1919 and comprises a hollow trcngh-shaped bed si, the open top of which is closed by the removable cloth-plate presser-foot 10.

.journaled in suitable bearings one o' which is shown at 1i within the vertical frame member 6. iit its upper'cnd the shaft 11 carries a bevel `gear 12 which meshes with a suitable gear 13 iiscd to the main-shaft 10, all as more fully described ins-aid Dosch et al. Patent No. 1,804,750.

r1`he sewing machine is preferably driven by means of an electric motor unit let which is built into the machine traine and is connected to the main-shat't 10 in the mannerdisclose-d in the said Dosch et al. Patent No. 1,311,114. To this end the goose-,neck is formed in its rear side near its bend or the juncture o1 the vertical and horizontal members (3 and 7, with an aperture 15 in which is removably litted the motor-unit 14 having its power shaft le directed transversely orf the main-shaft 10 of the sewing machine and carrying the worm 16 which meshes with the gear 17 on said main-shaft. The motor leads 18 are extended downwardly through a conduit 19 within the vertical frame member 6 and emerge from the trarne through an aperture 2O in the rear end of the bed t below the clothplate 5. This conduit protects wires 1-8 `from oil and abrasion.

The sewing` machine goose-neck has built into it a device i'or illuminating the work being' stitched and to this end is formed adjacent the motor aperture 15 with a smaller' aperture 21 in whichis sei'fured by set-screw 22 the bushing; 2:3. The axis oi the aperture 21l preferably spaced in advance ot' and is substantially parallel with the axis oi the aperture 15. The bushingY 23 has an inner reduced aperture 24 and an outer internally threaded aperture 25 which meet internally oia the bushing at the conical seat 26. The inner aperture 24 receives the upper end 28 ot' the conduit 29, preferably or' some soft metal such as lead or annealed copper, said upper end 28 being` flared out-V inattesa elbow is the usual chainor pull-socket 33 fitted preferably with the semi-cylindrical reflector 34 and tubular lamp bulb 35 located substantially horizontally and closely in rear of and alongside the arm 7 between the head 8 and vertical member 6, whereby the arm 7 functions as a shade to shield the eyes of the operator from the flare of the lamp, and whereby the light is directed obliquely upon the work adjacent the sewing point from the operators right, thus avoiding` the casting of objectionable shadows upon the worlrby the head 8 or machine parts carried by the arm 7, as explained in my said copending application Serial No. A99,965. The conduit 29 which includes the lighting wires 36 is led downwardly within the vertical member 6 oi" the f roose-neclr and out through an aperture 3i adjacent the aperture 20 in the bed et. The upper bearing bracket 11 tor the vertical shaft 11 is slightly recessed at 38, Fig. 5, to aiord a clear passage :tor the conduit 29 without ob structing the aperture 15.

rlhe complete electrically driven and lighted sewinghead 1, as above described, is preferably stationed upon a drop-head cabinet 2 such as disclosed in the U. S. patent to Kopf l- Hemleb, No. 1,349,578, of August 17, 1920. The means incorporated in the cabinet tor supporting the sewing head 1 so that it'may be swung or dropped into the cavity c below the cabinet top 39'a-re constructed substantially in accordance with the disclosure in the 'UL S. patent to Diehl. at al. No. 541.47-, dated June 25, 1895 they rear side ot the sewingv machine bed bein-g hinged to the cabinet top 39 andthe front side resting upon the lip t0 ot the hinged leat' 41. lvhen the machine is to be dropped within the cavity o the head 1 and leatI t1 are irst lifted to carry the lip 40 out of range ofthe fronte-dge ot the sewing' machine bed, whereupon the head 1 may be lowered into the cavity. .lhe'cabinet is equipped with the usual spring supported. lifting plate t2 hinged at elli and having the lateral lug t which is adapted to extend under the end ot the sewing machine bed.

The supply circuit'vl is rpreferably passed downwardly through an insulating bloc-k i5 constructed substantially in accordance with the disclosure fin my copending application Serial No'. 444,969, filed March 5, 1921 and secured to the lifting plate 42. F rom the insulating block the supply circuitis led within the cavity c to the distributing point 46 from'which point the controller leads 47 extend to a suitable linee or treadle-operated motor controller, not shown. The motor leads 18 are also extended to the dis'- tributing point 15. The lighting wires 3G are connected in multiple with ahe supply circuit 3 within the cavity7 e a point 48 oh the supply side of the motor-controller circuit '37;` the purpose being tcfsupp'ly 'i'itull voltage to thelightv at all" times regardless of the starting and stopping of theinotor,

or a variable voltage atth'e in otor vterminals caused by 'thefopera'tion ot the usualniotoil` controller or rheostat in the' circuit ft?.

Y A"ln preparingto use .tlieoiitfit; `it is thus merely necessary to attarh the s'rrgl p` ply circuit'B to wzl' receptacle or Alighting fiXture, the,"selt-c'ontainedconnectionsA within` the outfit taking care otthemo-k tor and lighting circuits. lVithfprior out! fits having motor and Vli'gljitiiig devices in the nature ot attachments it is customaryv to run twol supply circuits, one .for the of Wire breakage, short-circuits, and otheil similar annoyances which are likely to render the electrical equipment inoperative.

The present machine is believed to be the first complete electrically lighted and electrically driven sewing machine outtit havling the wiring concealed and out ot the Way, together with a singlesupply circuit leading from the machine for attachment to the usual `household xture.

Having thus set forth the nature invention, what AI claim herein isof the l. A sewing machine having, in com` 'bination, a frame includinga bed and hollow goose-neck, stitch-forming mechanism incorporated in said traine, an electric motor mounted on said trame and connect-ions for operating said mechanism, an electric;

light mounted on said frame to illuminate the sewing point and motor and lighting circuits extendingr downwardly within the hollow goose-neck to a point below the level o't' said bed where they are `adapted for independent connection to a supplyrirruit.

2. sewingmachine stand 'formed with a cavity. a sewing machine received within said cavity and adapted to be elevated to operative position above the latter, electric driving and lighting devices applied to said sewing machine, driving and lighting circuits `concealed withinA` the sewing machine frame and leading into said cavity, and a single supply circuit leading into said cavity and fiexibly connected therewithin to the motor and 'lighting circuits, thereb)1 permitting raising of the sewing head to operative position without disturbance ot" the electrical connections to the source of supply.

3. A sewing machine having in combination, a'frame including a bed and hollow goose-neck, stitch-forming mechanism incorpoiated in said Jtrame and incli'iding operating' connections within said gooseneck, a conduit projecting from said goose neck and' lccminunicating with ythe lspace therewithi'n, an' electric light` supported by said conduit, anda lighting circuit'eXtend-- ing within said conduit and `thence downwardly within tnehollow goose-neck.

hln combination, a' sewing I machine frame including a bed and overh'anging Ahollow goose-neck, a hollow elbow rigidly attached tothe rear side of said kgoose-neck and communicating with the space thereiin.

said elbowl having its free end' disposed horizontally and directed toward the free end of thegoose-neck, an electrick lighting socket carried at the tree end otv saidelbow,y

and a current conductor extending from said socket within said elbow and downwardly within said hollow goose-neck.

" v5. A sewing machine having a frame including a hollow goose-neck i'ormed at thel rear side thereof adjacent the bend` with spaced horizontal apertures, an electric motor seated in the larger ot said apertures and connections for operating the machine mechanism, and an electric lighting fixture including a supporting conduit entering the other of said apertures.

6. -A sewing machinehaving a :trame including a hollow goose-neck formed with an aperture at its rear side and a lighting tixture including a lighting socket and a circuit-enclosing conduit entering said aperture.

7. A sewing machine having' a traine including al hollow goose-neck formed with an aperture at the rear side and a lighting fixture including a lighting socket and a socket supporting conduit entering and Xedly se*- cured within said aperture in a position such that the light is disposed in rear of the goose-neck where it is invisible to an operator stationed at the front of the machine. v

8. A sewing machine having a frame including a hollow goose-neck`ormed with an aperture at the rear side and a lightinglix-` ture including a lighting socket and a socket supporting oil-tight metallic conduit passing through and lixedly secured within said aperture and extending downwardly within the goose-neck.

a 9. A sewing machine having a framev comprising a hollow goose-neckincluding horizontal and vertical members connected by a bend and formed at its rear side adjacent its bend with a. lateral aperture communicating with the space within said goose-neck, an elbow having one limb entering and fixedly secured in said aperture and the other limb extending horizontally and forwardly substantially in parallelism with the horizontal member of the goose-neck, and a horizontally disposed electric light socket carried by said elbow.

1Q. A sewing machine comprising a frame having a hollow goose-neck formed in its rear wall with apertures yhaving spaced parlOO CIK

allel axes, and electric lighting and motor driving devices mounted, respectively, in said apertures.

1l. A sewing machine frame comprising a bed and hollow goosdnecrr rising therefrom, said goose-neck being formed at its rear side adjacent its bend with spaced pai'- allel motoi-vv andr lighting fixture-receiving apertures the lighting iivxture aperture being smaller than the motor-aperture and locatedv between the latter and the free end of the hollow gooseneck. i v Y l2. A sewing machine having a Vframe including a cloth-plate and hollow goose-neck,

electric lighting and electric driving devices applied to said sewing machine above ,said

to below the level of the cloth-plate and conl t nected to said motor and lighting circuits.

13'. A sewing machine having' a multiple recessed goose-neck, built-in motor driving and lighting devices received within' said re-v cesses, and a single supply circuit leading to said machine and connected to operate said devices.

In testimony whereof, l have signed my name to this specification.

FREDERICK DIEHL. 

